Miller LH100192V User manual

XR A And XR W

Processes

Description

MIG (GMAW) Welding

Wire Feeder And Feeder Gun

OM-1581 137 532Y

2007−01

™™

Visit our website at

www.MillerWelds.com

File: MIG (GMAW)

Miller Electric manufactures a full line

of welders and welding related equipment.

For information on other quality Miller

products, contact your local Miller distributor to receive the latest full

line catalog or individual specification sheets. To locate your nearest

distributor or service agency call 1-800-4-A-Miller, or visit us at

www.MillerWelds.com on the web.

Thank you and congratulations on choosing Miller. Now you can get

the job done and get it done right. We know you don’t have time to do

it any other way.

That’s why when Niels Miller first started building arc welders in 1929,

he made sure his products offered long-lasting value and superior

quality. Like you, his customers couldn’t afford anything less. Miller

products had to be more than the best they could be. They had to be the

best you could buy.

Today, the people that build and sell Miller products continue the

tradition. They’re just as committed to providing equipment and service

that meets the high standards of quality and value established in 1929.

This Owner’s Manual is designed to help you get the most out of your

Miller products. Please take time to read the Safety precautions. They

will help you protect yourself against potential hazards on the worksite.

We’ve made installation and operation quick

and easy. With Miller you can count on years

of reliable service with proper maintenance.

And if for some reason the unit needs repair,

there’s a Troubleshooting section that will

help you figure out what the problem is. The

parts list will then help you to decide the

exact part you may need to fix the problem.

Warranty and service information for your

particular model are also provided.

Miller is the first welding

equipment manufacturer in

the U.S.A. to be registered to

the ISO 9001:2000 Quality

System Standard.

Working as hard as you do

− every power source from

Miller is backed by the most

hassle-free warranty in the

business.

From Miller to You

Mil_Thank 4/05

TABLE OF CONTENTS

SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1. Symbol Usage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2. Arc Welding Hazards 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3. Additional Symbols For Installation, Operation, And Maintenance 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4. California Proposition 65 Warnings 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5. Principal Safety Standards 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-6. EMF Information 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1. Symboles utilisés 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2. Dangers relatifs au soudage à l’arc 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance 7 . . . . . .

2-4. Proposition californienne 65 Avertissements 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-5. Principales normes de sécurité 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-6. Information EMF 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3 − SPECIFICATIONS 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1. Wire Feeder Specifications 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2. Gun Specifications 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3. Duty Cycle And Overheating 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4 − INSTALLATION 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1. Connections With A CC, CV Or CC/CV Voltage Welding Power Source Having A 14-Socket Receptacle

4-2. Connections With A CV Welding Power Source Having Separate 115 VAC And Contactor Control Re-

ceptacles 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-3. Connections With A CC Welding Power Source Having A Contactor Control Receptacle 11 . . . . . . . . . .

4-4. Connections With A CC Welding Power Source And A 115 VAC/12 VDC Secondary Contactor 12 . . . .

4-5. Removing Top Cover Of Pistol Grip Gun 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-6. Air-Cooled Gun Connections 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-7. Water-Cooled Gun Connections 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-8. Air-Cooled Feeder Connections 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-9. Water-Cooled Feeder Connections 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-10. Voltage Sensing Lead Connections 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-11. 115 VAC/Contactor Control Plug Information 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-12. Replacing 115 VAC/Contactor Control Plug With Customer-Supplied 5-Pin Or Twistlock Plug 19 . . . . . .

4-13. Installing Wire Spool 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-14. Threading Welding Wire Through Feeder 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-15. Threading Welding Wire Through Gun 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-16. Coolant Guidelines 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-17. Adjusting Wire Feed Starting Speed 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE OF CONTENTS

SECTION 5 − OPERATION 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1. Front Panel Controls Of Feeder (Air-Cooled Model Shown) 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2. Safety Equipment 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3. Work And Voltage Sensing Cable Clamps 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4. Run-In Speed Control 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5. Jog Switch 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-6. Voltage/Wire Speed Switch And Meter (Optional) 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-7. Spot Controls (Optional) 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-8. Remote Voltage Control (Optional) 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-9. Power Switch 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-10. Flowmeter (Optional) 27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-11. Internal Controls 27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-12. Gun Controls 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-13. Shielding Gas 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-14. Coolant Supply For Water-Cooled Models Only 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-15. Sequence Of Gas Metal Arc Welding (GMAW) − Continuous Or Spot 28 . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 6 − MAINTENANCE & TROUBLESHOOTING 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-1. Routine Maintenance 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-2. Changing Or Cleaning Gun Drive Roll 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-3. Changing Feeder Drive Roll And Wire Inlet Guide 31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-4. Replacing Or Cleaning Gun Drive Roll Bearing 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-5. Replacing Or Cleaning Feeder Drive Roll Bearing 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-6. Changing Gun Contact Tip 33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-7. Removing Diffuser In Air And Water-Cooled Pistol-Grip Guns 33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-8. Replacing The Liner 34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-9. Replacing Hub Assembly 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-10. Adjusting Hub Tension 36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-11. Overload Protection 36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-12. Water Flow Switch (Optional For Water-Cooled Models) 36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-13. Troubleshooting 37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 7 − ELECTRICAL DIAGRAMS 39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 8 − PARTS LIST 42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 9 − PARTS LIST INCLUDING CONSUMABLES 52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OM-1581 Page 1

SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING

som _3/05

Y Warning: Protect yourself and others from injury — read and follow these precautions.

1-1. Symbol Usage

Means Warning! Watch Out! There are possible hazards

with this procedure! The possible hazards are shown in

the adjoining symbols.

Y Marks a special safety message.

. Means “Note”; not safety related.

This group of symbols means Warning! Watch Out! possible

ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards.

Consult symbols and related instructions below for necessary actions

to avoid the hazards.

1-2. Arc Welding Hazards

Y The symbols shown below are used throughout this manual to

call attention to and identify possible hazards. When you see

the symbol, watch out, and follow the related instructions to

avoid the hazard. The safety information given below is only

a summary of the more complete safety information found in

the Safety Standards listed in Section 1-5. Read and follow all

Safety Standards.

Y Only qualified persons should install, operate, maintain, and

repair this unit.

Y During operation, keep everybody, especially children, away.

ELECTRIC SHOCK can kill.

Touching live electrical parts can cause fatal shocks

or severe burns. The electrode and work circuit is

electrically live whenever the output is on. The input

power circuit and machine internal circuits are also

live when power is on. In semiautomatic or automatic wire welding, the

wire, wire reel, drive roll housing, and all metal parts touching the

welding wire are electrically live. Incorrectly installed or improperly

grounded equipment is a hazard.

D Do not touch live electrical parts.

D Wear dry, hole-free insulating gloves and body protection.

D Insulate yourself from work and ground using dry insulating mats

or covers big enough to prevent any physical contact with the work

or ground.

D Do not use AC output in damp areas, if movement is confined, or if

there is a danger of falling.

D Use AC output ONLY if required for the welding process.

D If AC output is required, use remote output control if present on

unit.

D Additional safety precautions are required when any of the follow-

ing electrically hazardous conditions are present: in damp

locations or while wearing wet clothing; on metal structures such

as floors, gratings, or scaffolds; when in cramped positions such

as sitting, kneeling, or lying; or when there is a high risk of unavoid-

able or accidental contact with the workpiece or ground. For these

conditions, use the following equipment in order presented: 1) a

semiautomatic DC constant voltage (wire) welder, 2) a DC manual

(stick) welder, or 3) an AC welder with reduced open-circuit volt-

age. In most situations, use of a DC, constant voltage wire welder

is recommended. And, do not work alone!

D Disconnect input power or stop engine before installing or

servicing this equipment. Lockout/tagout input power according to

OSHA 29 CFR 1910.147 (see Safety Standards).

D Properly install and ground this equipment according to its

Owner’s Manual and national, state, and local codes.

D Always verify the supply ground − check and be sure that input

power cord ground wire is properly connected to ground terminal in

disconnect box or that cord plug is connected to a properly

grounded receptacle outlet.

D When making input connections, attach proper grounding conduc-

tor first − double-check connections.

D Frequently inspect input power cord for damage or bare wiring −

replace cord immediately if damaged − bare wiring can kill.

D Turn off all equipment when not in use.

D Do not use worn, damaged, undersized, or poorly spliced cables.

D Do not drape cables over your body.

D If earth grounding of the workpiece is required, ground it directly

with a separate cable.

D Do not touch electrode if you are in contact with the work, ground,

or another electrode from a different machine.

D Do not touch electrode holders connected to two welding ma-

chines at the same time since double open-circuit voltage will be

present.

D Use only well-maintained equipment. Repair or replace damaged

parts at once. Maintain unit according to manual.

D Wear a safety harness if working above floor level.

D Keep all panels and covers securely in place.

D Clamp work cable with good metal-to-metal contact to workpiece

or worktable as near the weld as practical.

D Insulate work clamp when not connected to workpiece to prevent

contact with any metal object.

D Do not connect more than one electrode or work cable to any

single weld output terminal.

SIGNIFICANT DC VOLTAGE exists in inverter-type

welding power sources after removal of input

power.

D Turn Off inverter, disconnect input power, and discharge input

capacitors according to instructions in Maintenance Section

before touching any parts.

Welding produces fumes and gases. Breathing

these fumes and gases can be hazardous to your

health.

FUMES AND GASES can be hazardous.

D Keep your head out of the fumes. Do not breathe the fumes.

D If inside, ventilate the area and/or use local forced ventilation at the

arc to remove welding fumes and gases.

D If ventilation is poor, wear an approved air-supplied respirator.

D Read and understand the Material Safety Data Sheets (MSDSs)

and the manufacturer’s instructions for metals, consumables,

coatings, cleaners, and degreasers.

D Work in a confined space only if it is well ventilated, or while

wearing an air-supplied respirator. Always have a trained watch-

person nearby. Welding fumes and gases can displace air and

lower the oxygen level causing injury or death. Be sure the breath-

ing air is safe.

D Do not weld in locations near degreasing, cleaning, or spraying op-

erations. The heat and rays of the arc can react with vapors to form

highly toxic and irritating gases.

D Do not weld on coated metals, such as galvanized, lead, or

cadmium plated steel, unless the coating is removed from the weld

area, the area is well ventilated, and while wearing an air-supplied

respirator. The coatings and any metals containing these elements

can give off toxic fumes if welded.

OM-1581 Page 2

Arc rays from the welding process produce intense

visible and invisible (ultraviolet and infrared) rays

that can burn eyes and skin. Sparks fly off from the

weld.

ARC RAYS can burn eyes and skin.

D Wear an approved welding helmet fitted with a proper shade of fil-

ter lenses to protect your face and eyes when welding or watching

(see ANSI Z49.1 and Z87.1 listed in Safety Standards).

D Wear approved safety glasses with side shields under your

helmet.

D Use protective screens or barriers to protect others from flash,

glare and sparks; warn others not to watch the arc.

D Wear protective clothing made from durable, flame-resistant mate-

rial (leather, heavy cotton, or wool) and foot protection.

Welding on closed containers, such as tanks,

drums, or pipes, can cause them to blow up. Sparks

can fly off from the welding arc. The flying sparks, hot

workpiece, and hot equipment can cause fires and

burns. Accidental contact of electrode to metal objects can cause

sparks, explosion, overheating, or fire. Check and be sure the area is

safe before doing any welding.

WELDING can cause fire or explosion.

D Remove all flammables within 35 ft (10.7 m) of the welding arc. If

this is not possible, tightly cover them with approved covers.

D Do not weld where flying sparks can strike flammable material.

D Protect yourself and others from flying sparks and hot metal.

D Be alert that welding sparks and hot materials from welding can

easily go through small cracks and openings to adjacent areas.

D Watch for fire, and keep a fire extinguisher nearby.

D Be aware that welding on a ceiling, floor, bulkhead, or partition can

cause fire on the hidden side.

D Do not weld on closed containers such as tanks, drums, or pipes,

unless they are properly prepared according to AWS F4.1 (see

Safety Standards).

D Connect work cable to the work as close to the welding area as

practical to prevent welding current from traveling long, possibly

unknown paths and causing electric shock, sparks, and fire

hazards.

D Do not use welder to thaw frozen pipes.

D Remove stick electrode from holder or cut off welding wire at

contact tip when not in use.

D Wear oil-free protective garments such as leather gloves, heavy

shirt, cuffless trousers, high shoes, and a cap.

D Remove any combustibles, such as a butane lighter or matches,

from your person before doing any welding.

D Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B

for hot work and have a fire watcher and extinguisher nearby.

FLYING METAL can injure eyes.

D Welding, chipping, wire brushing, and grinding

cause sparks and flying metal. As welds cool,

they can throw off slag.

D Wear approved safety glasses with side

shields even under your welding helmet.

BUILDUP OF GAS can injure or kill.

D Shut off shielding gas supply when not in use.

D Always ventilate confined spaces or use

approved air-supplied respirator.

HOT PARTS can cause severe burns.

D Do not touch hot parts bare handed.

D Allow cooling period before working on gun or

torch.

D To handle hot parts, use proper tools and/or

wear heavy, insulated welding gloves and

clothing to prevent burns.

MAGNETIC FIELDS can affect pacemakers.

D Pacemaker wearers keep away.

D Wearers should consult their doctor before

going near arc welding, gouging, or spot

welding operations.

NOISE can damage hearing.

Noise from some processes or equipment can

damage hearing.

D Wear approved ear protection if noise level is

high.

Shielding gas cylinders contain gas under high

pressure. If damaged, a cylinder can explode. Since

gas cylinders are normally part of the welding

process, be sure to treat them carefully.

CYLINDERS can explode if damaged.

D Protect compressed gas cylinders from excessive heat, mechani-

cal shocks, physical damage, slag, open flames, sparks, and arcs.

D Install cylinders in an upright position by securing to a stationary

support or cylinder rack to prevent falling or tipping.

D Keep cylinders away from any welding or other electrical circuits.

D Never drape a welding torch over a gas cylinder.

D Never allow a welding electrode to touch any cylinder.

D Never weld on a pressurized cylinder − explosion will result.

D Use only correct shielding gas cylinders, regulators, hoses, and fit-

tings designed for the specific application; maintain them and

associated parts in good condition.

D Turn face away from valve outlet when opening cylinder valve.

D Keep protective cap in place over valve except when cylinder is in

use or connected for use.

D Use the right equipment, correct procedures, and sufficient num-

ber of persons to lift and move cylinders.

D Read and follow instructions on compressed gas cylinders,

associated equipment, and Compressed Gas Association (CGA)

publication P-1 listed in Safety Standards.

OM-1581 Page 3

1-3. Additional Symbols For Installation, Operation, And Maintenance

FIRE OR EXPLOSION hazard.

D Do not install or place unit on, over, or near

combustible surfaces.

D Do not install unit near flammables.

D Do not overload building wiring − be sure power supply system is

properly sized, rated, and protected to handle this unit.

FALLING UNIT can cause injury.

D Use lifting eye to lift unit only, NOT running

gear, gas cylinders, or any other accessories.

D Use equipment of adequate capacity to lift and

support unit.

D If using lift forks to move unit, be sure forks are

long enough to extend beyond opposite side of

unit.

OVERUSE can cause OVERHEATING

D Allow cooling period; follow rated duty cycle.

D Reduce current or reduce duty cycle before

starting to weld again.

D Do not block or filter airflow to unit.

STATIC (ESD) can damage PC boards.

D Put on grounded wrist strap BEFORE handling

boards or parts.

D Use proper static-proof bags and boxes to

store, move, or ship PC boards.

MOVING PARTS can cause injury.

D Keep away from moving parts.

D Keep away from pinch points such as drive

rolls.

WELDING WIRE can cause injury.

D Do not press gun trigger until instructed to do

so.

D Do not point gun toward any part of the body,

other people, or any metal when threading

welding wire.

MOVING PARTS can cause injury.

D Keep away from moving parts such as fans.

D Keep all doors, panels, covers, and guards

closed and securely in place.

D Have only qualified persons remove doors,

panels, covers, or guards for maintenance as

necessary.

D Reinstall doors, panels, covers, or guards

when maintenance is finished and before re-

connecting input power.

READ INSTRUCTIONS.

D Read Owner’s Manual before using or servic-

ing unit.

D Use only genuine Miller/Hobart replacement

parts.

H.F. RADIATION can cause interference.

D High-frequency (H.F.) can interfere with radio

navigation, safety services, computers, and

communications equipment.

D Have only qualified persons familiar with

electronic equipment perform this installation.

D The user is responsible for having a qualified electrician prompt-

ly correct any interference problem resulting from the installa-

tion.

D If notified by the FCC about interference, stop using the

equipment at once.

D Have the installation regularly checked and maintained.

D Keep high-frequency source doors and panels tightly shut, keep

spark gaps at correct setting, and use grounding and shielding to

minimize the possibility of interference.

ARC WELDING can cause interference.

D Electromagnetic energy can interfere with

sensitive electronic equipment such as

computers and computer-driven equipment

such as robots.

D Be sure all equipment in the welding area is

electromagnetically compatible.

D To reduce possible interference, keep weld cables as short as

possible, close together, and down low, such as on the floor.

D Locate welding operation 100 meters from any sensitive elec-

tronic equipment.

D Be sure this welding machine is installed and grounded

according to this manual.

D If interference still occurs, the user must take extra measures

such as moving the welding machine, using shielded cables,

using line filters, or shielding the work area.

1-4. California Proposition 65 Warnings

Y Welding or cutting equipment produces fumes or gases which

contain chemicals known to the State of California to cause

birth defects and, in some cases, cancer. (California Health &

Safety Code Section 25249.5 et seq.)

Y Battery posts, terminals and related accessories contain lead

and lead compounds, chemicals known to the State of

California to cause cancer and birth defects or other

reproductive harm. Wash hands after handling.

For Gasoline Engines:

Y Engine exhaust contains chemicals known to the State of

California to cause cancer, birth defects, or other reproductive

harm.

For Diesel Engines:

Y Diesel engine exhaust and some of its constituents are known

to the State of California to cause cancer, birth defects, and

other reproductive harm.

OM-1581 Page 4

1-5. Principal Safety Standards

Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,

from Global Engineering Documents (phone: 1-877-413-5184, website:

www.global.ihs.com).

Recommended Safe Practices for the Preparation for Welding and Cut-

ting of Containers and Piping, American Welding Society Standard

AWS F4.1 from Global Engineering Documents (phone:

1-877-413-5184, website: www.global.ihs.com).

National Electrical Code, NFPA Standard 70, from National Fire Protec-

tion Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA

02269−9101 (phone: 617−770−3000, website: www.nfpa.org).

Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,

from Compressed Gas Association, 1735 Jefferson Davis Highway,

Suite 1004, Arlington, VA 22202−4102 (phone: 703−412−0900, web-

site: www.cganet.com).

Code for Safety in Welding and Cutting, CSA Standard W117.2, from

Canadian Standards Association, Standards Sales, 178 Rexdale

Boulevard, Rexdale, Ontario, Canada M9W 1R3 (phone:

800−463−6727 or in Toronto 416−747−4044, website: www.csa−in-

ternational.org).

Practice For Occupational And Educational Eye And Face Protection,

ANSI Standard Z87.1, from American National Standards Institute, 11

West 42nd Street, New York, NY 10036−8002 (phone: 212−642−4900,

website: www.ansi.org).

Standard for Fire Prevention During Welding, Cutting, and Other Hot

Work, NFPA Standard 51B, from National Fire Protection Association,

P.O. Box 9101, 1 Battery March Park, Quincy, MA 02269−9101 (phone:

617−770−3000, website: www.nfpa.org).

OSHA, Occupational Safety and Health Standards for General Indus-

try, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q,

and Part 1926, Subpart J, from U.S. Government Printing Office, Super-

intendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (there

are 10 Regional Offices−−phone for Region 5, Chicago, is

312−353−2220, website: www.osha.gov).

1-6. EMF Information

Considerations About Welding And The Effects Of Low Frequency

Electric And Magnetic Fields

Welding current, as it flows through welding cables, will cause electro-

magnetic fields. There has been and still is some concern about such

fields. However, after examining more than 500 studies spanning 17

years of research, a special blue ribbon committee of the National

Research Council concluded that: “The body of evidence, in the

committee’s judgment, has not demonstrated that exposure to power-

frequency electric and magnetic fields is a human-health hazard.”

However, studies are still going forth and evidence continues to be

examined. Until the final conclusions of the research are reached, you

may wish to minimize your exposure to electromagnetic fields when

welding or cutting.

To reduce magnetic fields in the workplace, use the following

procedures:

1. Keep cables close together by twisting or taping them.

2. Arrange cables to one side and away from the operator.

3. Do not coil or drape cables around your body.

4. Keep welding power source and cables as far away from opera-

tor as practical.

5. Connect work clamp to workpiece as close to the weld as possi-

ble.

About Pacemakers:

Pacemaker wearers consult your doctor before welding or going near

welding operations. If cleared by your doctor, then following the above

procedures is recommended.

Page is loading ...

OM-1581 Page 8

2-5. Principales normes de sécurité

Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,

de Global Engineering Documents (téléphone : 1-877-413-5184, site In-

ternet : www.global.ihs.com).

Recommended Safe Practices for the Preparation for Welding and Cut-

ting of Containers and Piping, American Welding Society Standard AWS

F4.1 de Global Engineering Documents (téléphone : 1-877-413-5184, site

Internet : www.global.ihs.com).

National Electrical Code, NFPA Standard 70, de National Fire Protection

Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA

02269-9101 (téléphone : 617-770-3000, site Internet : www.nfpa.org).

Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,

de Compressed Gas Association, 1735 Jefferson Davis Highway, Suite

1004, Arlington, VA 22202-4102 (téléphone : 703-412-0900, site Internet

: www.cganet.com).

Code for Safety in Welding and Cutting, CSA Standard W117.2, de

Canadian Standards Association, Standards Sales, 178 Rexdale

Boulevard, Rexdale, Ontario, Canada M9W 1R3 (téléphone :

800-463-6727 ou à Toronto 416-747-4044, site Internet :

www.csa-international.org).

Practice For Occupational And Educational Eye And Face Protection,

ANSI Standard Z87.1, de American National Standards Institute, 11 West

42nd Street, New York, NY 10036-8002 (téléphone : 212-642-4900, site

Internet : www.ansi.org).

Standard for Fire Prevention During Welding, Cutting, and Other Hot

Work, NFPA Standard 51B, de National Fire Protection Association, P.O.

Box 9101, 1 Battery March Park, Quincy, MA 02269-9101 (téléphone :

617-770-3000, site Internet : www.nfpa.org).

OSHA, Occupational Safety and Health Standards for General Industry,

Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q, and

Part 1926, Subpart J, de U.S. Government Printing Office, Superinten-

dent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (il y a 10

bureaux régionaux−−le téléphone de la région 5, Chicago, est

312-353-2220, site Internet : www.osha.gov).

2-6. Information EMF

Considérations sur le soudage et les effets de basse fréquence et des

champs magnétiques et électriques.

Le courant de soudage, pendant son passage dans les câbles de souda-

ge, causera des champs électromagnétiques. Il y a eu et il y a encore un

certain souci à propos de tels champs. Cependant, après avoir examiné

plus de 500 études qui ont été faites pendant une période de recherche

de 17 ans, un comité spécial ruban bleu du National Research Council a

conclu : « L’accumulation de preuves, suivant le jugement du comité, n’a

pas démontré que l’exposition aux champs magnétiques et champs élec-

triques à haute fréquence représente un risque à la santé humaine ».

Toutefois, des études sont toujours en cours et les preuves continuent à

être examinées. En attendant que les conclusions finales de la recherche

soient établies, il vous serait souhaitable de réduire votre exposition aux

champs électromagnétiques pendant le soudage ou le coupage.

Pour réduire les champs magnétiques sur le poste de travail, appliquer

les procédures suivantes :

1. Maintenir les câbles ensemble en les tordant ou en les enveloppant.

2. Disposer les câbles d’un côté et à distance de l’opérateur.

3. Ne pas courber pas et ne pas entourer pas les câbles autour de

votre corps.

4. Garder le poste de soudage et les câbles le plus loin possible de

vous.

5. Connecter la pince sur la pièce aussi près que possible de la sou-

dure.

En ce qui concerne les stimulateurs cardiaques

Les porteurs de stimulateur cardiaque doivent consulter leur médecin

avant de souder ou d’approcher des opérations de soudage. Si le méde-

cin approuve, il est recommandé de suivre les procédures précédentes.

OM-1581 Page 9

SECTION 3 − SPECIFICATIONS

3-1. Wire Feeder Specifications

Specification Description

Type Of Input Power 115 Volts AC, 3 Amperes At 50/60 Or 100 Hz Power

Control Circuit Voltage Provided At Gun 30 Volts DC

Wire Feed Speed Range 70-875 ipm (1.9-22.2 mpm)

Overall Dimensions Length: 19 in (483 mm); Width: 9-1/4 in (235 mm); Height: 15-1/4 in (387 mm)

Maximum Spool Capacity 12 in (305 mm)

Cooling Method Air-Cooled (A Models) Or Water-Cooled (W Models)

Weight (Feeder With Gun) Models With 15 ft (4.6 m) Cable Assembly

Net: 56 lb (25 kg); Ship: 58 lb (26 kg)

Models With 30 ft (9.1 m) Cable Assembly

Net: 63 lb (29 kg); Ship: 65 lb (30 kg)

3-2. Gun Specifications

Specification Description

Input Voltage 30 Volts DC

Duty Cycle (Air-Cooled Models) At 200 Amperes, 100% Using Argon Or Argon Mixture Shielding Gas

At 250 Amperes, 60% Using Argon Or Argon Mixture Shielding Gas (See

Section 3-3)

Duty Cycle (Water-Cooled Models) At 400 Amperes, 100% Using Argon Or Argon Mixture Shielding Gas (See Sec-

tion 3-3)

Wire Size Range .030 Thru 1/16 in (0.8 Thru 1.6 mm) Aluminum Wire

.030 Thru .045 in (0.8 Thru 1.1 mm) Hard Or Cored Wire

3-3. Duty Cycle And Overheating

Duty Cycle is percentage of 10 min-

utes that unit can weld at rated load

without overheating.

Y Exceeding duty cycle can

damage unit and void

warranty.

100% Duty Cycle At 200 Amperes Using Argon 60% Duty Cycle At 250 Amperes Using Argon

6 Minutes Welding 4 Minutes Resting

Continuous Welding

Air-Cooled Models

Water-Cooled Models

100% Duty Cycle At 400 Amperes Using Argon

Continuous Welding

OM-1581 Page 10

SECTION 4 − INSTALLATION

Be sure that contact tip, liner, and drive rolls are correct for wire size and type. See

Section 5 to change parts as needed. See Section 7 for list of other available

contact tips.

NOTE

Review Section 4-1 through Section 4-4 to determine how equipment will be connected. Air-cooled models are shown

in Section 4-1 through Section 4-4. For water-cooled models, supplied water hoses must be connected from wire feed-

er to coolant supply.

Read entire Section 4 before installing equipment.

4-1. Connections With A CC, CV Or CC/CV Voltage Welding Power Source Having A

14-Socket Receptacle

1 Constant Current (CC),

Constant Voltage (CV) Or

Constant Current/Constant

Voltage (CC/CV) Welding

Power Source

2 115 VAC/Contactor Control

14-Pin Plug

3 Workpiece

4 Voltage Sensing Lead

Connect lead to workpiece for CC

welding only.

5 Gun

6 Wire Feeder

7 115 VAC/Contactor Control

Cord

8 Gas Cylinder

151 774-F

OM-1581 Page 11

4-2. Connections With A CV Welding Power Source Having Separate 115 VAC And

Contactor Control Receptacles

1 Constant Voltage (CV) Weld-

ing Power Source

2 Plug

Obtain matching plugs for connect-

ing to power source receptacles.

3 Workpiece

4 Voltage Sensing Lead

Do not connect to workpiece.

5 Gun

6 Wire Feeder

7 115 VAC/Contactor Control

Cord

8 Gas Cylinder

151 775-G

4-3. Connections With A CC Welding Power Source Having A Contactor Control

Receptacle

1 Constant Current (CC) Weld-

ing Power Source

2 5-Pin Or Two-Prong Twistlock

Plug

3 Workpiece

4 Voltage Sensing Lead

5 Gun

6 Wire Feeder

7 3-Conductor Contactor Con-

trol Cord

8 3-Conductor 115 VAC Cord

9 Gas Cylinder

10 115 VAC Plug

Obtain plug for wire feeder.

151 776-F

OM-1581 Page 12

4-4. Connections With A CC Welding Power Source And A 115 VAC/12 VDC Secondary

Contactor

1 Constant Current (CC) Weld-

ing Power Source

2 Workpiece

3 Voltage Sensing Lead

4 Gun

5 Wire Feeder

6 3-Conductor 115 VAC Cord

7 3-Conductor Contactor Con-

trol Cord

8 5-Pin Plug

9 Secondary Contactor

10 Gas Cylinder

11 115 VAC Plug

Obtain plug for wire feeder.

151 777-F

4-5. Removing Top Cover Of Pistol Grip Gun

1 Top Cover Triangular Boss

Push up on triangular boss to open

door. Door hinges on handle.

To open door fully, push up on door

until it clicks into position.

. If door is pushed too far it will

separate from handle. If this

happens the door can be rein-

stalled.

Push door back into original posi-

tion to close.

802 528-C

OM-1581 Page 13

4-6. Air-Cooled Gun Connections

1 Gun Control Cable

Insert plug into Gun Control recep-

tacle, and tighten threaded collar.

2 Gas Hose

Connect to Gas fitting on feeder.

3 Weld Cable

4 Weld Cable Terminal In

Feeder

Connect gun weld cable to weld

cable terminal in feeder.

5 Wire Conduit

6 Thumbscrew

7 Wire Conduit Block

8 Strain Relief

. For guns that have wire con-

duits with replaceable liners,

the strain relief will need to be

removed from the control box.

Loosen thumbscrew, and insert

conduit through wire opening until

it bottoms against block. Trim liner

if necessary, as close to the rolls

as possible. Tighten thumbscrew.

Close and latch door.

145 432-C / Ref. 802 536-E / Ref. 151 778-B

Tools Needed:

5/8, 3/4 in

6 5

Left Side

OM-1581 Page 14

4-7. Water-Cooled Gun Connections

1 Gas Hose

Connect to Gas fitting on feeder.

2 Water Hose

Connect to water to gun fitting on

feeder (left-hand threads).

3 Wire Conduit

4 Thumbscrew

5 Wire Conduit Block

Loosen thumbscrew, and insert

conduit through Wire opening until

it bottoms against block. Trim liner

if necessary, as close to the rolls

as possible. Tighten thumbscrew.

6 Gun Control Cable

Insert plug into gun control recep-

tacle, and tighten threaded collar.

7 Strain Relief

Remove strain relief as shown.

8 Power/Water Cable

9 Strain Relief

. For guns that have wire con-

duits with replaceable liners,

the strain relief will need to be

removed from the control box.

Route cable through strain relief

and connect to weld/water from gun

outlet on feeder. Reinstall strain re-

lief. Close and latch door.

Ref. 802 536-E / Ref. 151 778-B / 152 456-A

5/8, 1-1/8 in

Tools Needed:

Left Side

OM-1581 Page 15

4-8. Air-Cooled Feeder Connections

1 Gas Hose Grommet

2 10 ft (3 m) Gas Hose

3 Rear Of Gas Fitting

Route one end of gas hose through

grommet, and connect hose to rear

of Gas fitting in feeder. Connect

remaining end of hose to

regulator/flowmeter.

4 Weld Cable To Welding Power

Source

Select and prepare weld cable ac-

cording to welding power source

manual.

5 Weld Cable Grommet

6 Current Sensing (Reed) Relay

7 Weld Cable Terminal In

Feeder

Route one end of weld cable

through grommet, through reed

relay, and connect to weld cable

terminal in feeder. Connect

remaining end of cable to positive

(+) weld output terminal on welding

power source.

8 Gun Weld Cable

Be sure that terminal of welding

power source weld cable is in direct

contact with terminal from gun weld

cable. Close and latch door.

Ref. 151 771-A

Tools Needed:

5/8, 1-1/8 in

Top View

Connect To

Positive (+) Weld

Output Terminal On

Welding Power Source

Connect To

Regulator/

Flowmeter

246 7 3

Rear Panel

OM-1581 Page 16

4-9. Water-Cooled Feeder Connections

Obtain coolant supply.

1 Gas Hose Grommet

2 10 ft (3 m) Gas Hose

3 Rear Of Gas Fitting

Route one end of gas hose through

grommet, and connect hose to rear

of Gas fitting in feeder. Connect

remaining end of hose to

regulator/flowmeter.

4 Coolant Supply Hose

Grommet

5 10 ft (3 m) Water Supply Hose

With 5/8 in Adapter Fitting

6 Rear Of Water Fitting (Left-

Hand Threads)

Remove 5/8 in adapter fitting from

hose. Route one end of a water

hose through grommet, and con-

nect to rear of Water To Gun fitting

in feeder. Connect remaining end to

supply fitting on coolant supply.

7 Coolant Return Hose

Grommet

8 10 ft (3 m) Water Return Hose

9 Connection Block (Left-Hand

Threads)

Route one end of remaining water

hose through grommet, and con-

nect to rear of connection block (not

shown). Connect remaining end of

hose to return fitting on coolant

supply.

10 Weld Cable Grommet

11 Weld Cable To Welding Power

Source

Select and prepare weld cable

according to welding power source

manual.

12 Current Sensing (Reed) Relay

13 Weld Cable Screw In Feeder

Route one end of weld cable

through grommet, through reed

relay, and connect to block in feeder

using hardware shown. Connect

remaining end of cable to positive

(+) weld output terminal on welding

power source.

Close and latch door.

Ref. 152 431-A

5/8, 1-1/8 in

Tools Needed:

141078

Connect To

Return Fitting On

Coolant Supply

Connect To

Positive (+) Weld

Output Terminal On

Welding Power Source

Connect To

Supply Fitting On

Coolant Supply

Connect To

Regulator/

Flowmeter

9112312

Top View

Rear Panel

OM-1581 Page 17

4-10. Voltage Sensing Lead Connections

Unit is factory set for constant volt-

age (CV) welding. To set unit for

constant current (CC) welding,

proceed as follows:

1 Terminal Strip 2T

2 Strain Relief

Loosen screws of strain relief.

3 Voltage Sensing Lead

Route ring terminal end of lead

through strain relief, and connect

ring terminal to terminal A of

terminal strip 2T. Tighten screws on

strain relief.

4 Motor Speed Control Board

PC1

5 Jumper Plug

6 Receptacle RC5

For constant voltage (CV) welding,

place jumper plug in INT. position.

Do not connect voltage sensing

lead clamp to workpiece.

For constant current (CC) welding,

place plug in EXT. position.

Connect clamp end of voltage

sensing lead to workpiece.

Reinstall right side panel.

Ref. 151 772-B

Tools Needed:

1/4 in

EDCBA

EXT INT

RC5

321

OM-1581 Page 18

4-11. 115 VAC/Contactor Control Plug Information

1 Interconnecting Cord

2 115 VAC/Contactor Control

Plug PLG5

If CC or CC/CV welding power

source is equipped with matching

14-socket receptacle, insert plug,

and tighten threaded collar.

Proceed to Section 4-13.

If plug PLG5 will not connect to CC

welding power source receptacle,

use the following pin information

and Section 4-12 to replace PLG5

with a suitable plug.

Ref. S-0004-A / Ref. 151 772

Pin* Pin Information

A, B Contact closure to A completes contactor control circuit.

I 115 volts ac.

J Contact closure to I completes 115 volts ac contactor control circuit.

G Circuit common for 115 volts ac circuit.

C +10 volts dc output to remote control.

D Remote control circuit common.

E 0 to +10 volts dc input command signal from remote control.

K Chassis common.

Remote

Contactor

Remote

Voltage Control

*The remaining pins are not used.

OM-1581 Page 19

4-12. Replacing 115 VAC/Contactor Control Plug With Customer-Supplied 5-Pin Or

Twistlock Plug

1 115 VAC/Contactor Control

Plug PLG5

2 Contactor Control Cord

3 115 VAC Cord

Find and label cords by following

leads to back of PLG5:

Contactor control cord connects to

pins A & B of PLG5

115 VAC cord connects to pin J of

PLG5.

Cut off plug PLG5.

4 5-Pin Plug

5 Two-Prong Twistlock Plug

For connections shown in Figure

3-3 or Figure 3-4, install 5-pin or

twistlock plug onto contactor con-

trol cord.

For Figure 3-2 connection, obtain

plug to match contactor control

receptacle on welding power

source, and install plug onto

contactor control cord.

Obtain 115 VAC plug and connect

to 115 VAC cord as follows:

green lead to ground

white lead to 115 VAC common

black lead to 115 VAC hot.

6 Plug PLG50

7 Plug PLG51

8 Plug PLG52

Unit shipped with PLG50 con-

nected to PLG51 to provide 115

VAC for contactor.

If contact closure needed for con-

tactor, connect PLG50 to PLG52.

151 773-C

Tools Needed:

254

Page is loading ...

Miller LH100192V User manual

Related papers

Other documents